Port Plugs and Dust Caps show info...

We carry an assortment of Replacement Port Plugs and Dust Caps for SCUBA Regulators which are interchangeable and compatible regardless of brand.

We offer 3 sizes of port plugs... but most regulators only have 2 size plugs on their first stages. Port plugs can be either a high pressure (HP) port plug or a low pressure (LP) port plug.

The most common size port plug for LP ports (BC inflator hoses, Regulator hoses) is the 3/8" size. This size is used on most brands of regulator made around the world. A few brands of first stages have a larger size low pressure port that is 1/2-inch, notably some older Apex and Aqualung models.

The most common size port plug for the HP ports (SPG, air integrated computers, transmitters) is the 7/16" size. There are a few unique regulators available that use a larger size high pressure port size of 1/2". This 1/2" size is not common and are usually found on Apeks, Mares and old Dacor regulators.

The LP 3/8" port plugs use the 4mm Hex key.
The HP 7/16" port plugs use the 5mm Hex key.
The HP 1/2" port plugs use the 5mm Hex key.

Looking for a particular fitting you don't see here? Let us know and we'll see if we can order it for you.

We reserve the right to limit order quantities to less than 10 pieces because our supply is appropriate for the demands of individual divers, but not bulk orders. Large volume bulk orders will NOT qualify for our free shipping promotion.